![GRAPHIC](https://capedge.com/proxy/SC TO-T/0001104659-13-010089/g46331mxi014.gif)
| Disclosure Note This presentation contains "forward-looking statements" about ECT and NGT and other matters affecting an investment in the ECT Common Units that are subject to risks and uncertainties. All statements other than statements of historical fact included in this document, including regarding the financial position, production and reserve growth, and the activities of ECT and NGT are forward-looking statements. Similarly, statements that describe ECA's objectives, plans or goals are forward-looking. ECA's forward-looking statements are based on the current intent, belief, expectations, estimates and projections of ECA's management regarding ECT and NGT and the industries relating to ECT and NGT. When used in this document, the words "may," "will," "plans," "projects," "targets," "forecasts," "seeks," "could," "believes," "expects," "anticipates," "intends" or similar expressions or the negative of such terms or expressions or other variations on such terms or comparable terminology are intended to identify such forward-looking statements. Such statements may be influenced by factors that could cause actual outcomes and results to differ materially from those projected. Forward-looking statements are not guarantees of future performance and are subject to risks and uncertainties. You should not place undue reliance on these forward-looking statements. ECA and ECT do not undertake any obligation to release publicly any revisions to the forward-looking statements to reflect events or circumstances after the date of this presentation or to reflect the occurrence of unanticipated events, unless the securities laws require otherwise. The registration statement, including all amendments thereto, on Form S-4 (File No. 333-185397) describes other important factors that could cause actual results to differ materially from the expectations of ECA and ECT, including under the heading "Risk Factors." All written and oral forward-looking statements attributable to ECA or ECT or persons acting on behalf of ECA or ECT are expressly qualified in their entirety by such factors. Disclosure This presentation was prepared for the benefit and internal use by the recipient for the purpose of considering the transaction contemplated herein. This presentation is confidential and proprietary to ECA and ECT and may not be disclosed, reproduced, distributed or used for any other purpose by the recipient without our express written consent. The information and any analysis in these materials reflect prevailing conditions and the views of ECA as of this date, all of which are subject to change. Financial analysis that may be set forth herein are intended only to suggest reasonable ranges of results. The printed presentation is incomplete without reference to the oral presentation or other written materials that supplement it. Availability of Prospectus This presentation is not a prospectus and is not an offer to sell securities. ECT has filed a registration statement (including a prospectus) with the SEC for the exchange offer to which this communication relates. Before you invest, you should read the prospectus in that registration statement and other documents the issuer has filed with the SEC for more complete information about ECA, ECT and this exchange offer. You may get these documents for free by visiting EDGAR on the SEC Web site at www.sec.gov. Alternatively, the ECA or ECT will arrange to send you the prospectus if you request it by calling toll-free (303) 694-2667 or 1-800-852-1422, respectively. 14 |